IPchain is a block chain product for the application in the field of intellectual property. Launched in October, 2016, after months of market analysis, technical solutions research, and communication with experts in the field of intellectual property, the technical basis of IP Chain was determined to be the block chain technology based on the model of UTXO, which is similar to Bitcoin network. Through adopting Consensus Mechanism of DPOC (one of the improved solutions of DPOS) and with reference to the transaction model for the characteristic of products in the field of intellectual property, IPC Chain aims at providing a flexible and rigorous solution of intellectual property block chain.
Smart contracts on Ethereum are fully self contained and any information or access to off-chain data is restricted. Tellor solves this problem by creating a system where parties can request the value of an off-chain data point (e.g. ETH/USD) and miners compete to add this value to an on-chain data bank, accessible by all Ethereum smart contracts. Inputs to a data series are secured by a network of staked miners. The main Tellor smart contract creates a time series of each requested data series and aims to become the standard source of high value data for decentralized applications. This oracle, “Tellor”, utilizes similar incentive mechanisms to other cryptocurrency systems through the issuance of Tellor’s token, Tributes, that are used to request a particular data series from miners.